刀片中的Laravel验证错误:多个表单显示相同的消息

public function store(Request $request)
{
    $validator = Validator::make($request->all(), [
        'field1' => 'required',
        'field2' => 'required',
    ]);

    if ($validator->fails()) {
        $errors = $validator->errors();
        $errors->add('field1', 'Field 1 is required.');
        $errors->add('field2', 'Field 2 is required.');

        return redirect()->back()->withErrors($errors)->withInput();
    }

    // 表单验证通过，继续处理其他逻辑
}

<form method="POST" action="/form">
    @csrf

    <div>
        <label for="field1">Field 1</label>
        <input type="text" name="field1" value="{{ old('field1') }}">
        @if ($errors->has('field1'))
            <span>{{ $errors->first('field1') }}</span>
        @endif
    </div>

    <div>
        <label for="field2">Field 2</label>
        <input type="text" name="field2" value="{{ old('field2') }}">
        @if ($errors->has('field2'))
            <span>{{ $errors->first('field2') }}</span>
        @endif
    </div>

    <button type="submit">Submit</button>
</form>